<template>
  <div class="login_container">
      <div class="login_box">
        <div class="avatar_box">
           <img src="../assets/logo.png" alt="">
       </div>
       <el-form ref="loginFormRef" label-width="0px" :model="loginForm" :rules="loginFormRules" class="login_form">
        <!-- 用户名 -->
       <el-form-item prop="username">
       <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
      </el-form-item>
      <!-- 密码 -->
       <el-form-item prop="password">
       <el-input v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" type="password"></el-input>
      </el-form-item>
      <!-- 按钮区域 -->
      <el-form-item class="btns">
        <el-button type="primary" @click="login">登录</el-button>
        <el-button type="info" @click="resetLoginForm">重置</el-button>
      </el-form-item>
       </el-form>
      </div>
  </div>
</template>

<script>
export default {
  data () {
    return {
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      loginFormRules: {
        username: [
          { required: true, message: '请输入登录名称', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 5 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入登录密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    resetLoginForm () {
      this.$refs.loginFormRef.resetFields()
    },
    login () {
      this.$refs.loginFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.post('login', this.loginForm)
        if (res.meta.status !== 200) return this.$message.error('登录失败!')
        this.$message.success('登录成功')
        window.sessionStorage.setItem('token', res.data.token)
        this.$router.push('/home')
      })
    }
  }
}
</script>

<style lang="less" scoped>
.login_container{
    background-color:#2b4b6b;
    height: 100%;
}
.login_box{
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position:absolute;
    left:50%;
    top:50%;
    transform: translate(-50%,-50%);
    .avatar_box{
        height: 130px;
        width: 130px;
        border:1px solid #eee;
        border-radius: 50%;
        padding: 10px;
        box-shadow: 0 0 10px #ddd;
        position: absolute;
        left: 50%;
        transform: translate(-50%,-50%);
        background-color: #fff;
    img{
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eee;
    }
    }
}
.login_form{
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
}
.btns{
    display: flex;
    justify-content: flex-end;
}
</style>
